lua - How can I remove onEvent from button widget in Corona? -

i trying remove onevent listener button widget. tried assign nil onevent attribute didn't work , lastly tried this:

   buttonwidget : removeeventlistener("touch", buttonwidget.onevent) 

i have several button , stopped button's event listeners. suggest? how can remove event listener 1 button widget? thanks.

here how create button widgets:

for i=0,2  j=0,8     count=count+1     letterbtn[count] = widget.newbutton{     id = alphabet[count],      left = 5+j*50,     top = h-160+i*50,      label = alphabet[count],     width = 45,     height = 45,      font = nil,      fontsize = 18,     labelcolor = { default = {0,0,0}, on = {255,255,255}},     onevent = btnoneventhandler      };   end end 

can tell me how can remove onevent later?

okey, tried button: setenabled(false) still disables buttons not one. tried second advice gives same result. copying rest of code. can please @ , tell me missing?

local function checkletter(e) if(guessword)     i=1, #guessword         local c = guessword:sub(i,i)         if c==e.target.id              letter[i].text = e.target.id             lettercount = lettercount +1             print("lettercount"..lettercount)             e.target:setenabled(false)         end     end     if (lettercount == #guessword , not hanged)         timer.performwithdelay(500, function()              lettercount=0             rightwguess = rightwguess+1             k,v in pairs(notguessedword)                  if v == guessword                   notguessedword[k]=nil                 end             end             enablebuttons()             startgame() end ,1)     end end end    local function btnoneventhandler(e)    if(e.phase == "began")     checkletter(e)     print(e.target.id)    end     return true end 

if want temporarily (or permanently) stop button responding touch events, can use button:setenabled(false).

the following worked me removing listener 2 buttons. button 1 , 3 stopped responding events expected while 2, 4, , 5 still did.

update: disable, have on 'ended' phase or corona gets confused.

widget = require 'widget'  local function btnoneventhandler(event)     print('event', event.target.id, event.phase)     if event.phase == 'ended'         -- disable button can't clicked again         -- must disable in end state or corona gets          -- confused         event.target:setenabled(false)     end end      local buttons = {} i=1,5     buttons[i] = widget.newbutton{         id = 'button' .. i,          left = display.contentcenterx - 50,         top = 60 * i,          label = 'button ' .. i,         width = 100,         height = 50,          onevent = btnoneventhandler     } end  buttons[1]:removeeventlistener('touch', buttons[1].onevent) buttons[3]:removeeventlistener('touch', buttons[3].onevent)